The 20 Longest Wars in History

Source: U.S. Army / Archive Photos via Getty Images

For as long as humans have existed, they have been in conflict. The earliest evidence of two different factions fighting one another to the death dates back at least 4,700 years, and there were likely many conflicts before that.

People go to war for many reasons. Independence, religion, territory, and political ideology have been some of the causes soldiers were willing to put their lives on the line for. Many have decided that money is worth going to war over. Mercenaries were common in ancient battles, and when the first recorded war ended, the victorious Sumerians “carried away as spoils the weapons of Elam.” As the world has progressed, war is still profitable. There are many companies earning billions from war to this day. These are 20 companies profiting the most from war.

Some wars are quick, especially for countries who spend a lot on their military. But this is not always the case. Before technology made it possible to kill many enemies from anywhere, opposing sides could retreat, take refuge in a fortified castle, and wait to go back out and fight. This allowed some wars in the past to drag out decades and even centuries.

24/7 Tempo has compiled a list of the longest wars in history by reviewing data and articles from various sources. In order to appear on this list, a conflict had to meet the definition of war as an open and usually declared armed conflict between political entities such as sovereign states or competing factions within the same state, such as a civil war. The conflict had to be sustained over a period of time and intended to resolve political or territorial disputes.

Sponsored: Find a Qualified Financial Advisor

Finding a qualified financial advisor doesn’t have to be hard. SmartAsset’s free tool matches you with up to 3 fiduciary financial advisors in your area in 5 minutes. Each advisor has been vetted by SmartAsset and is held to a fiduciary standard to act in your best interests. If you’re ready to be matched with local advisors that can help you achieve your financial goals, get started now.